HFS+

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The filesystem HFS+, also HFS Plus or Extended Hierarchical File System, is Article description::the native filesystem of Mac OS 8.1+ and Mac OS X up to 10.12 Sierra from Apple for Mac computers. It is per design case-insensitive, but there is an optional case-sensitive variant as well.

Mac OS X is a Unix-based operating system with a BSD core. Up to Version 10.5 Leopard it can run on PowerPC and starting from Version 10.4 Tiger it runs on x86. It was renamed to OS X with version 10.8 Mountain Lion and to macOS with version 10.12 Sierra, which is the last to use HFS+ as the primary filesystem of the base installation. Its successor is APFS.

Installation

Kernel

KERNEL Enable HFS+ support (CONFIG_HFSPLUS_FS)
File systems  --->
   Miscellaneous Filesystems  --->
      < > Apple Macintosh file system support
      <M> Apple Extended HFS file system support
   -*- Native language support  --->
      (utf8) Default NLS Option
      <M>   Codepage macroman
      {*}   NLS UTF-8
Note
The filesystem driver does not support journaled HFS+. Since the journal is actually just a special file on the HFS+ volume, it will be mounted read-only if a journal is present. Use -o force to mount a journaled HFS+ volume read/write at your own risk!

On PowerPC-based Macs it is recommended to also select support for the Apple Partition Map (APM), on Intel-based Macs the GUID Partition Table (GPT) is used.

KERNEL Enable APM and GPT support (CONFIG_MAC_PARTITION, CONFIG_MSDOS_PARTITION and CONFIG_EFI_PARTITION)
Enable the block layer  --->
   Partition Types  --->
      [*] Macintosh partition map support
      [*] PC BIOS (MSDOS partition tables) support
      [*] EFI GUID Partition support
Note
External devices such as USB or FireWire enclosed Hard Disk Drives can use any partition table with the HFS+ filesystem. Common is APM (Apple Partition Map, "Macintosh"), MBR (Master Boot Record, "PC BIOS") and GPT (GUID Partition Table).

Emerge

diskdev_cmds

The sys-fs/diskdev_cmds package is a port of HFS/HFS+ utilities from OpenDarwin, the BSD core operating system of macOS (formally Mac OS X). It includes the mkfs and fsck userspace utilities.

root #emerge --ask sys-fs/diskdev_cmds

The commands have names common to OpenDarwin: newfs_hfs and fsck_hfs. The package creates symlinks to mkfs.hfsplus and fsck.hfsplus. To create a new filesystem on a partition, e.g. on /dev/sda2, use:

root #newfs_hfs /dev/sda2
Warning
Creating a new filesystem will delete all data on the specified partition! Be very sure about the specified device file! (E.g. /dev/sda2)
Note
newfs_hfs is able to create a HFS and a HFS+ filesystem. With the option -w it can also add a HFS wrapper to a HFS+ partition. Other options include -v "Volume Label". See the newfs_hfs manpage for more information.

hfsplusutils

The sys-fs/hfsplusutils package was traditionally used on PowerPC based Macs. It provides utilities similar to those for HFS from the sys-fs/hfsutils package.

root #emerge --ask sys-fs/hfsplusutils

With sys-fs/hfsplusutils a filesystem isn't mounted as part of /, instead the provided utilities allow limited access to the filesystem.

root #mac-fdisk -l /dev/sda 
/dev/sda
        #                    type name                  length   base      ( size )  system
/dev/sda1     Apple_partition_map Apple                     63 @ 1         ( 31.5k)  Partition map
/dev/sda2              Apple_Boot NewWorld Bootblock   1286080 @ 64        (628.0M)  Unknown
/dev/sda3              Apple_Free Extra                1073152 @ 1286144   (524.0M)  Free space
/dev/sda4               Apple_HFS Tiger              209715200 @ 2359296   (100.0G)  HFS
...
Note
On PowerPC Macs with Apple Partition Map, both HFS and HFS+ filesystems are type Apple_HFS. Special partitions, such as case-sensitive HFS+ or Software-RAID partitions, will be Apple_HFSX.
Note
Some HFS+ partitions have a HFS wrapper partition for compatibility reasons which cannot be used.

Select the partition with hpmount:

root #hpmount /dev/sda4

On the selected partition, the commands hp[ls|pwd|mkdir|cd|copy|rm] can be used for file operations, instead of Unix "/" for directories the colon ":" has to be used. E.g. /dir/to/file will be :dir:to:file for the specified commands.

root #hpls
Apple Extras     Desktop Folder   Develop

The partition is released with the hpumount utility.

root #hpumount /dev/sda4
Note
For further help refer to the manpage (man 1 hfsp).

See also

  • HFS — the native filesystem of the Apple Macintosh and its operating system up to Mac OS 8.
  • Filesystem — a means to organize data expected to be retained after a program terminates by providing procedures to store, retrieve, and update data as well as manage the available space on the device(s) which contain it.
  • Mount — the attaching of an additional filesystem to the currently accessible filesystem of a computer.
  • Removable media — consists of any media that is easily removed from a system
  • Fstab — a configuration file that is used to configure how and where the main filesystems are to be mounted, especially at boot time.


References

    This article is issued from Gentoo. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.